Have you read the About TA section below? Your question is already answered there.

Quote

Why does it say “Transaction does not exist”?

In the following cases, you may be told that your transaction does not exist:1) Too low fee: We only provide accelerator services for those with at least 0.0001BTC/KB transaction fees;2) Node reboot: When a Bitcoin node is rebooted, synchronization of transaction data may be delayed. You can try again later;3) Previous transaction unconfirmed. Your transaction can’t be confirmed if previous transactions connecting to yours are unconfirmed. You’ll need to wait till all previous transactions are confirmed first. You can also use our accelerator to help with that.We can’t accelerate confirmation of “Double spent” transactions either.

Also another trick for you, free of charge: Wait for xx:00 o'clock and submit your transaction immediately. It usually works.

Edit: I'm not sure but it is maybe being rejected because the amount you send is too little. It will get confirmed eventually but you may wait 3-4 days.

Have you read the About TA section below? Your question is already answered there.

Quote

Why does it say “Transaction does not exist”?

In the following cases, you may be told that your transaction does not exist:1) Too low fee: We only provide accelerator services for those with at least 0.0001BTC/KB transaction fees;2) Node reboot: When a Bitcoin node is rebooted, synchronization of transaction data may be delayed. You can try again later;3) Previous transaction unconfirmed. Your transaction can’t be confirmed if previous transactions connecting to yours are unconfirmed. You’ll need to wait till all previous transactions are confirmed first. You can also use our accelerator to help with that.We can’t accelerate confirmation of “Double spent” transactions either.

Also another trick for you, free of charge: Wait for xx:00 o'clock and submit your transaction immediately. It usually works.

Have you read the About TA section below? Your question is already answered there.

Quote

Why does it say “Transaction does not exist”?

In the following cases, you may be told that your transaction does not exist:1) Too low fee: We only provide accelerator services for those with at least 0.0001BTC/KB transaction fees;2) Node reboot: When a Bitcoin node is rebooted, synchronization of transaction data may be delayed. You can try again later;3) Previous transaction unconfirmed. Your transaction can’t be confirmed if previous transactions connecting to yours are unconfirmed. You’ll need to wait till all previous transactions are confirmed first. You can also use our accelerator to help with that.We can’t accelerate confirmation of “Double spent” transactions either.

Also another trick for you, free of charge: Wait for xx:00 o'clock and submit your transaction immediately. It usually works.

Have you read the About TA section below? Your question is already answered there.

Quote

Why does it say “Transaction does not exist”?

In the following cases, you may be told that your transaction does not exist:1) Too low fee: We only provide accelerator services for those with at least 0.0001BTC/KB transaction fees;2) Node reboot: When a Bitcoin node is rebooted, synchronization of transaction data may be delayed. You can try again later;3) Previous transaction unconfirmed. Your transaction can’t be confirmed if previous transactions connecting to yours are unconfirmed. You’ll need to wait till all previous transactions are confirmed first. You can also use our accelerator to help with that.We can’t accelerate confirmation of “Double spent” transactions either.

Also another trick for you, free of charge: Wait for xx:00 o'clock and submit your transaction immediately. It usually works.

Although it is not explicitly said on viabtc's About TA . We have already tested that they also don't accept transactions with dust output/s . Dust outputs are a really small sized outputs . You can see it in your transaction here:

Probably because dusts are considered as a spam on blockchain . I'm sure that this is because of that because your transactions miner fee is still okay cause the minimum is 10K sats/kb you paid 10300+K sats for 258bytes, It doesn't have any unconfirmed parent nor it's a double spent .

What wallet are you using? You can do a full rbf where you can remove the unconfirmed transactions and resend them again with a higher fee .This is a great guide for that: https://bitcointalk.org/index.php?topic=1802212.0 (Check if your wallet supports full rbf)It also contains other ways you can do about your transact .